# ZAVOD vs Traylo

The clearest difference is in-app purchases: ZAVOD at none against Traylo's 1. ZAVOD also leads on iOS requirement (13.4 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Traylo sells 1 one-off in-app purchase. ZAVOD asks for nothing beyond the download.

ZAVOD ships an update monthly, Traylo every 3 weeks. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ZAVOD | Traylo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/traylo-aligner-tracker/id6771505845/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 11 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Fitbase](https://appshunter.io/developer/1530906929) | [Arseniy Zlobin](https://appshunter.io/developer/1018725119) |

## What reviewers say

### ZAVOD

[App page](https://appshunter.io/ios/app/zavod/id6444791973)

**Features:** macOS Compatibility

**In-app purchases:** none


### Traylo

[App page](https://appshunter.io/ios/app/traylo-aligner-tracker/id6771505845)

Track your clear aligner wear time and progress with this companion app. It helps you remember when to change aligners, provides detailed statistics, and allows you to store visual records of your bite changes. Designed for ease of use, it supports your treatment plan consistency.

**Highlights:** Track daily aligner wear time, Progress photos and bite change records, Reminders for aligner changes, Detailed wear statistics, Home Screen and Lock Screen widgets, Apple Watch integration

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Traylo Full Version | $5.99 | one-time |


## Frequently asked questions

### Is ZAVOD free?

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

### Is Traylo free?

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

### Do ZAVOD or Traylo have ads?

Neither ZAVOD nor Traylo shows ads.

### Which is updated more often, ZAVOD or Traylo?

ZAVOD ships an update monthly, and Traylo every 3 weeks. Most recently, ZAVOD was updated on September 25, 2026 and Traylo 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.*