# SpotLog vs TailTag

The clearest difference is price: TailTag at Free against SpotLog's $2.99. TailTag also leads on review sentiment (100% vs 70%). SpotLog's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 18). On update cadence, ads and in-app purchases there is nothing between them.

TailTag is free to download; SpotLog costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SpotLog ships an update every 2 months, TailTag every 3 months. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SpotLog | TailTag |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/tailtag/id6747738157/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 46 MB | 8 MB |
| Requires iOS | **8.0** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mark Goodspeed](https://appshunter.io/developer/1390718845) | [Josh Mansfield](https://appshunter.io/developer/1799618167) |

## What reviewers say

### SpotLog

[App page](https://appshunter.io/ios/app/spotlog/id1390718846)

Log train sightings with precise location, time, and date. Access detailed datasets for European railway systems, including locomotives and rolling stock. This app is designed for enthusiasts to meticulously record their observations.

**Highlights:** Record train sightings, Log location, time, and date, UK and European railway datasets, Details on locomotives and rolling stock, User-friendly interface

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

**In-app purchases:** none


### TailTag

[App page](https://appshunter.io/ios/app/tailtag/id6747738157)

Log every aircraft you see with photos, registrations, and airline details. Organize your sightings in a clean collection and search instantly by airline, registration, or model. Perfect for aviation enthusiasts, plane spotters, and travelers.

**Highlights:** Log aircraft by registration, airline, type, Tag sightings with photos, Organize spottings in a collection, Search by airline, registration, model, Designed for plane spotters

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpotLog free?

SpotLog costs $2.99, with no in-app purchases.

### Is TailTag free?

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

### Do SpotLog or TailTag have ads?

Neither SpotLog nor TailTag shows ads.

### Which is updated more often, SpotLog or TailTag?

SpotLog ships an update every 2 months, and TailTag every 3 months. Most recently, SpotLog was updated on September 29, 2026 and TailTag on September 30, 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.*