SittingPostureCHECKER vs ReactionX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SittingPostureCHECKER
Read full descriptionHide full description
Would you like to check your posture ? Prepare a photo taken from the side of a subject sitting in a chair. Be careful not to move or tilt the camera left or right when shooting. Move the red marks to the positions shown below. If the line connecting the ear, shoulder, chest and hip is straight, your posture is generally said to be quite good. (1) Forehead (2) Chin (3) Ear (tragion) (4) Shoulder (acromion point) (5) Chest (middle thickness of the chest) (6) Hip (greater trochanter) (7) Knee (back of kneepan) (8) Ankle === CAUTION === You cannot diagnoses illness by using this app. And we do not give permission to use this app for commercial purposes.
ReactionX
Enhance your athletic performance with this app, designed to be used with specialized training lamps. Improve your speed and reaction times through professional sports training exercises.
- Professional sports training
- Speed improvement
- Reaction time enhancement
- Compatible with training lamps hardware
Read full descriptionHide full description
Must used with Reaction training lamps hardware. Help you on professional sport training. Improve your speed and reaction.
Screenshots
Verdict
The clearest difference is update cadence: ReactionX at every 6 weeks against SittingPostureCHECKER's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SittingPostureCHECKER ships an update every 6 months, ReactionX every 6 weeks. Both last shipped on November 3, 2026.
| Parameter | SittingPostureCHECKER | ReactionX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 2 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Medic Engineering K.K. | 学斌 赵 |
In-app purchases
SittingPostureCHECKER
No in-app purchases
ReactionX
No in-app purchases
Questions
Is SittingPostureCHECKER free?
Is ReactionX free?
Do SittingPostureCHECKER or ReactionX have ads?
Which is updated more often, SittingPostureCHECKER or ReactionX?
Other comparisons
