# InstaCal vs Anti Proton

The clearest difference is in-app purchases: Anti Proton at none against InstaCal's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. InstaCal sells 3 in-app purchases, starting at $7.99 per month. Anti Proton asks for nothing beyond the download.

InstaCal ships an update every 4 days, Anti Proton every 3 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | InstaCal | Anti Proton |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (27 ratings)](https://appshunter.io/ios/app/instacal/id6743951306/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 89 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Digital Delight LLC](https://appshunter.io/developer/1803828248) | [Akash Kishore Chawla](https://appshunter.io/developer/6782927343) |

## What reviewers say

### InstaCal

[App page](https://appshunter.io/ios/app/instacal/id6743951306)

This social app focuses on food and fitness, allowing users to see friends' meals, discover new dishes, and log their own food with AI assistance. It integrates fitness tracking and offers AI coaching for personalized insights.

**Highlights:** Social food feed, AI food logging, AI dietitian coaching, Multiple logging methods, Integrated fitness tracking, Meal discovery map, Friend challenges

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InstaCal | $7.99 | per month |
| InstaCal | $29.99 | per year |
| Streak Restore | $0.99 | one-time |


### Anti Proton

[App page](https://appshunter.io/ios/app/anti-proton/id6782927341)

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

**In-app purchases:** none


## Frequently asked questions

### Is InstaCal free?

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

### Is Anti Proton free?

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

### Do InstaCal or Anti Proton have ads?

Neither InstaCal nor Anti Proton shows ads.

### Which is updated more often, InstaCal or Anti Proton?

InstaCal ships an update every 4 days, and Anti Proton every 3 days. Most recently, InstaCal was updated on November 8, 2026 and Anti Proton on November 5, 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.*