# IMPELLO vs byOne

The clearest difference is in-app purchases: IMPELLO at none against byOne's 3. IMPELLO also leads on device support (4 vs 1) and iOS requirement (15.1 vs 17.0). byOne's advantage is update cadence (every 2 days vs every 5 days). On price and ads there is nothing between them.

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

IMPELLO ships an update every 5 days, byOne every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | IMPELLO | byOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/impello-training-log/id6760678668/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 36 MB | 20 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rudy Aquino](https://appshunter.io/developer/1885677588) | [Khalifa Seck](https://appshunter.io/developer/1888655692) |

## What reviewers say

### IMPELLO

[App page](https://appshunter.io/ios/app/impello-training-log/id6760678668)

This app helps lifters track their workouts with faster logging and clear progress visualization. Manage rest, save routines, and review exercise history. It also offers Apple Watch integration for wrist-based tracking and heart rate monitoring.

**Highlights:** Fast workout logging, Clear progress visualization, Rest timer management, Save custom workouts, Exercise history review, Apple Watch integration, Heart rate monitoring

**Features:** Apple Watch app

**In-app purchases:** none


### byOne

[App page](https://appshunter.io/ios/app/byone-gym-workout-tracker/id6804019100)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $1.99 | one-time |
| Coffee | $4.99 | one-time |
| Big tip | $9.99 | one-time |


## Frequently asked questions

### Is IMPELLO free?

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

### Is byOne free?

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

### Do IMPELLO or byOne have ads?

Neither IMPELLO nor byOne shows ads.

### Which is updated more often, IMPELLO or byOne?

IMPELLO ships an update every 5 days, and byOne every 2 days. Most recently, IMPELLO was updated on October 24, 2026 and byOne on October 24, 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.*