# BirdieSync vs 28 Shift

The clearest difference is rating: BirdieSync at 5.0 against 28 Shift's 4.5. BirdieSync also leads on in-app purchases (none vs 2) and iOS requirement (8.0 vs 13.0). 28 Shift's advantage is update cadence (every 5 days vs every 2 months) and ratings volume (11 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. 28 Shift sells 2 one-off in-app purchases. BirdieSync asks for nothing beyond the download.

BirdieSync holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: 28 Shift has 11 ratings behind it against 1, so its average is the more settled of the two.

BirdieSync ships an update every 2 months, 28 Shift every 5 days. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | BirdieSync | 28 Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/birdiesync/id386987593/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/28-shift-life-reset-app/id6742382518/reviews) |
| Number of ratings | 1 | **11** |
| Positive reviews | 55.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 51 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Callicia](https://appshunter.io/developer/386987596) | [Shinobi Apps](https://appshunter.io/developer/1773354590) |

## What reviewers say

### BirdieSync

[App page](https://appshunter.io/ios/app/birdiesync/id386987593)

Seamlessly sync contacts and events between your iPhone and desktop applications like Thunderbird. Enjoy automatic updates across devices with a focus on data privacy, as information is transferred directly and securely without cloud storage.

**Highlights:** Automatic synchronization, Direct device-to-device transfer, Contact photo support, Multiple address books and calendars, Recurring events and alarms, Secure connection

**Features:** macOS Compatibility

**In-app purchases:** none


### 28 Shift

[App page](https://appshunter.io/ios/app/28-shift-life-reset-app/id6742382518)

This program guides you through a 28-day journey to build discipline, mental strength, and lasting habits. It offers daily tasks, reflection tools, and science-backed methods for personal growth and improved productivity.

**Highlights:** 28-day habit-building program, Daily tasks for consistency, Focus on discipline and mindset, Journaling for reflection, Scientifically proven methods, Progress tracking, Adaptable structure

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 28 Days Program | $29.99 | one-time |
| Premium 28 Days Program | $49.99 | one-time |


## Frequently asked questions

### Is BirdieSync free?

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

### Is 28 Shift free?

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

### Which has better reviews, BirdieSync or 28 Shift?

BirdieSync is rated higher. BirdieSync averages 5.0 out of 5 from 1 ratings, while 28 Shift averages 4.5 from 11 ratings.

### Do BirdieSync or 28 Shift have ads?

Neither BirdieSync nor 28 Shift shows ads.

### Which is updated more often, BirdieSync or 28 Shift?

BirdieSync ships an update every 2 months, and 28 Shift every 5 days. Most recently, BirdieSync was updated on October 17, 2026 and 28 Shift on October 10, 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.*