# Boost vs Synstax

Boost and Synstax are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Boost sells 4 in-app purchases, starting at $0.99 per month and Synstax sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Boost ships an update every 2 weeks, Synstax every 3 weeks. The most recent releases landed on September 28, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Boost | Synstax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/synstax-interaction-checker/id6760453147/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 5 MB | 152 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Rene Fischer](https://appshunter.io/developer/1868527187) | [宁 丁](https://appshunter.io/developer/1848762948) |

## What reviewers say

### Boost

[App page](https://appshunter.io/ios/app/boost-supplement-tracker/id6758024013)

Easily log your daily supplements and nutrition with gentle reminders and Apple Health sync. This app offers a clean, clutter-free interface for informed users who value privacy and simplicity in tracking their intake.

**Highlights:** Single-tap supplement check-off, Log missed intakes from past days, Apple Health sync, Gentle reminders, Planned daily intake overview, Clean, clutter-free design

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Support | $0.99 | per month |
| 1 Cup of Coffee (Support) | $1.99 | one-time |
| 1 Sandwich (Support) | $4.99 | one-time |
| 1 Lunch (Support) | $11.99 | one-time |


### Synstax

[App page](https://appshunter.io/ios/app/synstax-interaction-checker/id6760453147)

This app helps you manage your supplement intake by checking for interactions between supplements and how your diet affects absorption. It features AI-powered label scanning, intake tracking, and personalized insights to optimize your routine.

**Highlights:** Supplement combination checker, Diet-supplement absorption insights, AI-powered label scanner, Smart intake tracking, AI analysis and chat, Personalized scheduling

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synstax Pro | $4.99 | per month |
| Synstax Pro | $29.99 | per year |
| Synstax Pro Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Boost free?

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

### Is Synstax free?

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

### Do Boost or Synstax have ads?

Neither Boost nor Synstax shows ads.

### Which is updated more often, Boost or Synstax?

Boost ships an update every 2 weeks, and Synstax every 3 weeks. Most recently, Boost was updated on September 28, 2026 and Synstax on October 11, 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.*