# WALT Calculator vs Duration Tracker

The clearest difference is update cadence: Duration Tracker at weekly against WALT Calculator's every 3 months. WALT Calculator's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WALT Calculator ships an update every 3 months, Duration Tracker weekly. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | WALT Calculator | Duration Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/walt-calculator/id815488678/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 14 MB | 9 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jeff McClay](https://appshunter.io/developer/815488681) | [Myung Geun Choi](https://appshunter.io/developer/1384350201) |

## What reviewers say

### WALT Calculator

[App page](https://appshunter.io/ios/app/walt-calculator/id815488678)

This utility app offers a suite of specialized calculators for weather, location, and target-related computations. Features include density altitude, field elevation, geographic coordinate conversion, distance calculation, and a target calculator for shooting sports.

**Highlights:** Density Altitude Calculator, Field Elevation Calculator, Geographic Coordinates Converter, Geographic Distance Calculator, Target Calculator

**Features:** macOS Compatibility

**In-app purchases:** none


### Duration Tracker

[App page](https://appshunter.io/ios/app/duration-tracker/id6759609367)

**In-app purchases:** none


## Frequently asked questions

### Is WALT Calculator free?

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

### Is Duration Tracker free?

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

### Do WALT Calculator or Duration Tracker have ads?

Neither WALT Calculator nor Duration Tracker shows ads.

### Which is updated more often, WALT Calculator or Duration Tracker?

WALT Calculator ships an update every 3 months, and Duration Tracker weekly. Most recently, WALT Calculator was updated on October 23, 2026 and Duration Tracker on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*