# CALOG vs FormLapse

The clearest difference is in-app purchases: CALOG at none against FormLapse's 3. CALOG also leads on iOS requirement (15.1 vs 18.0). FormLapse's advantage is update cadence (every 2 days vs every 9 days). On price, ads and device support there is nothing between them.

Both are free to download. FormLapse sells 3 one-off in-app purchases. CALOG asks for nothing beyond the download.

CALOG ships an update every 9 days, FormLapse every 2 days. The most recent releases landed on September 9, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | CALOG | FormLapse |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 3 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [KOKI YAMAMOTO](https://appshunter.io/developer/1849198450) | [Shuhei Yamamoto](https://appshunter.io/developer/1896725589) |

## What reviewers say

### CALOG

[App page](https://appshunter.io/ios/app/calog-ai/id6754609187)

**Features:** macOS Compatibility

**In-app purchases:** none


### FormLapse

[App page](https://appshunter.io/ios/app/formlapse/id6780141102)

Effortlessly track your body transformation with daily photos that automatically align to create a smooth time-lapse. Build a consistent habit with reminders and view your progress alongside weight trends. All your data stays private on your device.

**Highlights:** Auto-aligned time-lapse creation, Daily photo habit builder, Weight logging and trend overlay, On-device data privacy, Face blurring for sharing, Multiple purchase plans

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| スタンダード | $2.99 | one-time |
| プレミアムへアップグレード | $4.99 | one-time |
| プレミアム | $7.99 | one-time |


## Frequently asked questions

### Is CALOG free?

CALOG is free to download, with no in-app purchases.

### Is FormLapse free?

FormLapse is free to download, with in-app purchases available.

### Do CALOG or FormLapse have ads?

Neither CALOG nor FormLapse shows ads.

### Which is updated more often, CALOG or FormLapse?

CALOG ships an update every 9 days, and FormLapse every 2 days. Most recently, CALOG was updated on September 9, 2026 and FormLapse on September 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*