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How to choose a free posture analysis app for Android, with 17 apps compared
Choose a free posture analysis app by what its free version includes: whether "free" means no purchases at all, a free tier or a trial, how many photos and views it needs, and whether you can export the report. On October 8, 2026 we checked 17 photo-based posture apps on Google Play against these and five other criteria. Six list no in-app purchases. One of them, PoseAlign, is our app. We did not test any app's accuracy.
Every app here measures posture from still photos of your body. Posture reminders, wearables, webcam monitors and exercise-only programs are left out; if you are weighing those against a photo app, see photo, webcam or wearable posture checkers. How the list was built is explained at the end.
The 17 apps against eight criteria
The tables are grouped by price model and sorted alphabetically within each group. The order is not a ranking. "Not stated" means the Google Play listing and the developer's website do not say; the app may still have the feature. "Android" alone means we did not find the app on the US App Store.
No in-app purchases listed
| App | Platforms | Price model | Photos and views | Measurements | PDF in free version | Manual landmark adjustment | Published studies | Privacy statement |
|---|---|---|---|---|---|---|---|---|
| AlignZen - Posture Checker | Android | Free; no in-app purchases listed | "A photo"; views not stated | Not stated | Not stated | Not stated | None found | Not stated |
| OurPosture - AI Posture Scan | Android | Free; no in-app purchases listed | Front + side, captured live with a voice guide | 9 points: shoulder height, pelvic height, body tilt and leg alignment from the front; knee, neck, upper body and pelvic lines from the side | Not stated; history can be exported to a file | Not stated | None found | Photos processed on the device and not stored or sent; results saved as numbers on the device |
| PoseAlign (our app) | Android | Free; no subscription or in-app purchases | 1 front + 1 side, from the camera or gallery | 13 named: 11 front, 2 side, in degrees or percent | Yes | Not stated | None found in our search | Not stated |
| Posture Check: Spine Analyzer | Android | Free; no in-app purchases listed | Front + right side, with a self-timer | 5 graded A to D: forward head, shoulder balance, pelvic tilt, spine alignment, knee angle | Not stated | Not stated | None found | Analysis on the device; photos not uploaded or kept |
| Posture Fix: Body Alignment | Android | Free; no in-app purchases listed | 4: front, left, right, back | 8 metrics, each shown against a normal range, plus a posture type | Not stated | Not stated | None found | Analysis on the device; footage and measurements not sent to a server |
| Posture Screen: Spine Analysis | Android | Free; "No subscriptions", no in-app purchases listed | Up to 4: front, back, left, right | No list published | Yes ("Full PDF format") | Not stated | None found | Not stated |
Of the six, only PoseAlign and Posture Screen: Spine Analysis mention a PDF report, and our search found no published validation study for any of the six. Posture Check: Spine Analyzer and Posture Fix: Body Alignment come from the same developer, Cooltime Studio. Posture Screen: Spine Analysis was last updated on Google Play on December 26, 2023, so check that it installs on your phone.
Free download with paid plans or purchases
| App | Platforms | Price model | Photos and views | Measurements | PDF in free version | Manual landmark adjustment | Published studies | Privacy statement |
|---|---|---|---|---|---|---|---|---|
| APECS | Android, iOS | Free plan; Pro €4.79/month, Pro Plus €5.99/month (€2.50 and €3.08 a month billed yearly) | Front, back, side; side video on Pro Plus | Free: Quick Analysis and range of motion. Pro adds head-neck, trunk symmetry and Golden Ratio modules | Basic results summary; advanced PDF reports need Pro | Yes, Manual Mode | Trovato et al., 2022: 100 healthy young adults, 13 of 22 measures with ICC above 0.90 | Results stored on the device, no cloud upload |
| PhysioCode Postural Assessment | Android | Free Basic level; paid Extended and Professional plans ($3.49–$79.99 per item) | Front, back, side or free view; video | Landmark-based angles, segment lengths, your own added points | PDF export listed; plan not stated | Yes, you place the dots and can add points | Sabino et al., 2021: knee posture from photos, 30 volunteers, two examiners | Assessments saved in the cloud |
| PhysioMaster: Posture & ROM | Android, iOS | In-app purchases ($1.49–$69.99 per item); free version not described | Front, back, side | Posture analysis, angles drawn on images, goniometer, movement screen, walk tests | Not stated | Yes, angles measured by hand on images | Janisch et al., 2026: knee angles from video frames, 16 healthy adults; other studies cover range of motion | Not stated |
| Pose Pro: AI Posture Analysis | Android, iOS (as PosePro) | In-app purchases ($4.99–$99.99 per item); free version not described | 1 side | Posture score for forward head, rounded shoulders and hunched back; angles drawn on the photo | PDF saving mentioned; free version not described | Not stated | None found | Not stated |
| Posture Fix - Streching & Ai | Android, iOS | Premium unlocks unlimited scans, all programs and the full exercise library | 3: front, side, back | Deviations graded by severity (forward head, rounded shoulders, kyphosis, pelvic tilt and others), plus estimated height lost | Not stated | Not stated | None found | Analysis on the device; upload not mentioned |
| Posture Guy - Fix Your Posture | Android, iOS | Start free; Pro unlocks every program | 1 photo; view not stated | Posture score for head, shoulder, hip and spine alignment | Not stated | Not stated | None found | Not stated |
| Spine: Scan & Fix your posture | Android | In-app purchases; free version not described | 1 side | 0–100 score; forward head and shoulder angles | Not stated | Not stated | None found | Scan runs on the device; no upload |
| Statura: Posture Corrector | Android, iOS | Premium (weekly, yearly with a 7-day trial, or lifetime) adds score trend, scan history and a monthly report | 1 side, live camera or a gallery photo | 0–100 score, "posture age", angles for head, shoulders, hips and upper back | Not stated; monthly report is Premium | Not stated | None found | Photo analyzed on the device, never uploaded |
APECS, PhysioCode and PhysioMaster are built for practitioners. With PostureScreen Lite below, they are the only apps in the list that say you can place or move points yourself, and the only ones with published studies. Each study is small and tested specific measures, so it shows the method can be repeatable under the study's conditions, not that every number in the app is accurate.
Trial or upfront price
| App | Platforms | Price model | Photos and views | Measurements | PDF in free version | Manual landmark adjustment | Published studies | Privacy statement |
|---|---|---|---|---|---|---|---|---|
| Posturato: AI Posture Coach | Android, iOS | Pro needed for scans: $4.99/week or $39.99/year after a 3-day trial | 1 side selfie | Forward head angle, shoulder rounding and alignment in degrees; 0–100 score | No free version | Not stated | None found | Scan photos stay on the phone, not uploaded |
| PostureScreen Lite | Android (the full version, PostureScreen Mobile, is iOS) | $19.99 with 30 days of unlimited use, then $9.99/month or $99/year | 2-view, 4-view or side only | Posture assessment without automatic detection | No free version; PDF reports on subscription | Yes, you place the points | iOS app only: Boland et al., 2016; Szucs and Donoso Brown, 2018 | Not stated |
| Vertebro Posture Scan + Coach | Android, iOS | Weekly or yearly subscription after a 7-day trial | 1 front + 1 side | 8 metrics and a 0–100 score | No free version | Not stated | None found | Photos never leave the phone; analysis on the device |
PostureScreen's research applies to the iOS app: two small studies in the Journal of Physical Therapy Science tested rater reliability of PostureScreen Mobile on an iPad, with 10 and 20 young adults. Neither tested the Android version, which its own listing describes as "not compatible with our iOS version" and limited to "posture assessment without computer vision". The Android listing still quotes the study results.
What "free" means on a posture app listing
Google Play shows "Free" for every app above except PostureScreen Lite. Behind that label are five different models:
- Free with no purchases. No plan, subscription or in-app purchase. The listing has no "In-app purchases" label under the app name.
- Free tier plus paid upgrades. The core check stays free and extra modules cost money. APECS spells out what each plan includes; PhysioCode and Posture Guy say only that paid plans add more.
- Scan limit. You can scan a few times, then pay. Posture Fix - Streching & Ai says Premium unlocks "unlimited scans" without saying how many free scans you get. ePose, a Japanese service for clinics, states 5 analyses a month on its free plan.
- Trial, then subscription. Free to install, but scanning needs a subscription once a few days run out: 7 days for Vertebro, 3 for Posturato. Vertebro's listing adds that subscriptions renew automatically unless cancelled at least 24 hours before the period ends.
- Not described. Pose Pro, PhysioMaster and Spine sell in-app purchases without saying what the free version includes. The only way to find out is to install the app.
If you plan to check your posture once a month, a weekly subscription costs far more per check than it looks. The price range under "In-app purchases" on the listing, such as "$4.99 - $99.99 per item", is the quickest sign that a free download will ask for money.
The other criteria, and why they matter
Photos and views
One side photo shows how far your head and shoulders sit forward, but it cannot show left-right differences such as shoulder level or knee alignment. Those need a front or back photo. Apps that use a front and a side photo cover both; four-view apps add the back and both sides.
Measurements
A 0–100 score is easy to follow but hard to check or share. Named measurements with units, such as a shoulder level in degrees, tell you what changed between two checks and give a physiotherapist something specific to look at. Posture Fix: Body Alignment shows each metric against a "normal range"; the listing does not say where those ranges come from.
PDF in the free version
A PDF lets you keep a check outside the app and show it to someone else. Some apps keep the report behind a plan: APECS reserves advanced PDF reports for Pro, and PostureScreen Lite offers report PDFs on subscription. The PoseAlign report page shows what its free PDF contains.
Manual landmark adjustment
Every number comes from points placed on the photo. If an app places them automatically and you cannot move them, a misplaced point, for example on a hip hidden by a loose shirt, goes straight into the result. Apps that let you place or drag points let you fix that. Where an app does not, look at the overlay before you trust the number.
Published studies
A published reliability study tells you that a method gave similar results when repeated under the study's conditions, with that sample. It does not cover other phones, other users or measures the study did not test. APECS's developer lists more than 35 publications that used the app; the table links one study per app rather than every paper.
Privacy statement
Nine apps state that the analysis runs on the phone or that photos or results are not uploaded. PhysioCode states the opposite: assessments are saved in the cloud, which suits a clinic sharing records across devices. The rest do not say. Google Play's Data safety section, filled in by each developer, lists what data the app collects and shares; read it alongside the description.
Who each kind of app suits, and who it doesn't
You want to check your own posture on Android without paying
Start with the six apps that list no purchases, then filter by views and report. PoseAlign, OurPosture and Posture Check: Spine Analyzer use a front and a side view; Posture Fix: Body Alignment and Posture Screen: Spine Analysis use four. Only PoseAlign and Posture Screen: Spine Analysis mention a PDF. These apps don't suit you if you need a measure backed by a published study, because our search found no validation study for these six apps. How PoseAlign works shows its two-photo check step by step.
You assess clients as a physio, chiropractor or coach
Look at manual landmark adjustment, published studies and branded reports. APECS and PhysioCode have free starting plans; PostureScreen Lite does not. Free plans don't suit you if you need APECS's head-neck module or advanced PDF reports, which need Pro. PoseAlign vs APECS compares a personal check with a practitioner tool, and PostureScreen alternatives for Android covers what you give up by leaving PostureScreen.
You use an iPhone
PoseAlign is Android only. APECS, PhysioMaster, PosePro, Posture Fix - Streching & Ai, Posture Guy, Statura, Vertebro and Posturato also have iOS versions. PostureScreen Mobile on the US App Store costs $59.99 with 30 days of use, then $24.99 a month or $249 a year. iOS versions can differ from the Android ones, as PostureScreen shows, so read the App Store listing itself.
You want a score plus an exercise routine
Vertebro, Posturato, Statura, Spine, Posture Fix - Streching & Ai and Posture Guy are built around daily routines, and most charge for the routine, more scans or both. They don't suit you if you want named measurements to share, since most report a score. Compare the yearly price with how often you will scan.
You need range of motion or movement analysis
Still-photo apps cannot measure movement. APECS includes range of motion on its free plan and video on Pro Plus, PhysioCode lists video protocols for squats, jumps, gait and running, and PhysioMaster includes a goniometer and motion analysis.
How this guide was made
We built the list on October 8, 2026. We searched Google Play (US store, English) for "posture analysis" and "posture scan", and read the first page of Google results (US, English) for "free posture analysis app android". We kept Android apps on Google Play that analyze posture from still photos and are free to install, and left out reminder, wearable, webcam and exercise-only apps. Backed AI and Postureletics were left out because their listings do not say the assessment uses photos.
Every fact in the tables comes from the app's US Google Play listing or the developer's website, read that day. iOS availability comes from the US App Store, and studies from a PubMed search for each app's name. We did not test any app's accuracy or install the other apps to see what sits behind their paywalls. PoseAlign is our app.
One correction to the search results: Google's AI Overview and two of the top results describe PostureZone as a free Android app. Its Google Play listing returns a "not found" page and it has no US App Store page, so it is not in the tables.
Before you install
Open the store listing and check four things:
- Is there an "In-app purchases" label, and what price range does it show?
- Does the description mention a trial, a subscription, or "Pro unlocks scans"?
- How many photos does it need, and does that include a front view?
- Can the free version export a PDF or a report you can keep?
Whichever app you choose, the photo limits the result. Use the same distance, height, light and clothing each time, as set out in how to take front and side posture photos, and read how accurate photo posture analysis is before comparing two checks. None of these apps diagnoses a condition; if a result worries you or you have pain, take the report to a physiotherapist or doctor.