# Flash Interval Timer Workout vs Dosa

The clearest difference is in-app purchases: Flash Interval Timer Workout at none against Dosa's 2. Flash Interval Timer Workout also leads on update cadence (every 9 days vs monthly) and iOS requirement (15.1 vs 17.0). Dosa's advantage is ads (none vs shown) and ratings volume (22 vs 7). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. Dosa sells 2 in-app purchases, starting at $9.99 per month. Flash Interval Timer Workout asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Flash Interval Timer Workout against 4.8 for Dosa. Both are backed by a comparable volume of ratings — 7 and 22 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Flash Interval Timer Workout ships an update every 9 days, Dosa monthly. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Flash Interval Timer Workout | Dosa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/flash-interval-timer-workout/id6761573911/reviews)** | [4.8 (22 ratings)](https://appshunter.io/ios/app/dosa-peptide-and-glp1-tracker/id6766101033/reviews) |
| Number of ratings | 7 | **22** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | **Ad-supported** | Freemium |
| Size | 43 MB | 16 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Colin Differ](https://appshunter.io/developer/1823248120) | [Andreas Ciric](https://appshunter.io/developer/1895398077) |

## What reviewers say

### Flash Interval Timer Workout

[App page](https://appshunter.io/ios/app/flash-interval-timer-workout/id6761573911)

This app provides a customizable interval timer for various high-intensity interval training (HIIT) and circuit workouts. Easily build, save, and access your training sessions with clear visual cues and audio prompts to keep you focused.

**Highlights:** Customizable work and rest phases, Save and favorite workouts, Large, clear countdown display, Audio and voice cues, Workout history tracking, Multiple appearance themes

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

**In-app purchases:** none


### Dosa

[App page](https://appshunter.io/ios/app/dosa-peptide-and-glp1-tracker/id6766101033)

This intelligent journal helps manage complex health routines and GLP-1 journeys. It offers AI-driven insights, custom stack management, and wellness tracking to provide clarity and motivation. Prioritizes user privacy with secure, encrypted data storage.

**Highlights:** Intelligent stack management, Reconstitution reference utility, Smart logging and reminders, Daily wellness check-ins, AI insights and gamification, Private and secure data

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dosa Premium Monthly | $9.99 | per month |
| Dosa Premium (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Flash Interval Timer Workout free?

Flash Interval Timer Workout is free to download, with no in-app purchases.

### Is Dosa free?

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

### Which has better reviews, Flash Interval Timer Workout or Dosa?

Flash Interval Timer Workout is rated higher. Flash Interval Timer Workout averages 4.9 out of 5 from 7 ratings, while Dosa averages 4.8 from 22 ratings.

### Do Flash Interval Timer Workout or Dosa have ads?

Flash Interval Timer Workout shows ads; Dosa does not.

### Which is updated more often, Flash Interval Timer Workout or Dosa?

Flash Interval Timer Workout ships an update every 9 days, and Dosa monthly. Most recently, Flash Interval Timer Workout was updated on October 7, 2026 and Dosa on October 17, 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.*