# AtomicWeight vs AllyFastLite

The clearest difference is update cadence: AtomicWeight at fortnightly against AllyFastLite's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AtomicWeight ships an update fortnightly, AllyFastLite every 5 months. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AtomicWeight | AllyFastLite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/allyfastlite-fasting-tracker/id6748102745/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | — | Paid |
| Size | 2 MB | 3 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomas Antunes](https://appshunter.io/developer/1801729350) | [Wonseok Lee](https://appshunter.io/developer/1801568032) |

## What reviewers say

### AtomicWeight

[App page](https://appshunter.io/ios/app/atomicweight/id6743163643)

**In-app purchases:** none


### AllyFastLite

[App page](https://appshunter.io/ios/app/allyfastlite-fasting-tracker/id6748102745)

This app offers a clean and private intermittent fasting timer. It supports various fasting schedules and provides insights into fasting stages. All data is stored locally on your device for enhanced privacy.

**Highlights:** Intermittent fasting timer, Supports multiple fasting plans, Extended fast tracking, Editable fasting history, Fasting stage insights, Local data import/export, Dark Mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AtomicWeight free?

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

### Is AllyFastLite free?

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

### Do AtomicWeight or AllyFastLite have ads?

Neither AtomicWeight nor AllyFastLite shows ads.

### Which is updated more often, AtomicWeight or AllyFastLite?

AtomicWeight ships an update fortnightly, and AllyFastLite every 5 months. Most recently, AtomicWeight was updated on October 18, 2026 and AllyFastLite on October 6, 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.*