# NotSpot — Prove where mobile data fails

> Prove where mobile data fails (iPhone/iPad app by Neil Johnson.)

- Source: https://appshunter.io/ios/app/notspot/id6817853417 (this page in markdown: same URL + `.md`)
- Developer: [Neil Johnson](https://appshunter.io/developer/1873807920)
- Category: Utilities, Navigation
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 3 MB
- Languages: British English, French (France), German (Germany), Italian, Japanese, European Spanish
- Released: 2026-10-15
- Data updated: 2026-10-24

## What is NotSpot?

Your phone shows two bars, but nothing loads. The network's coverage map says you're fine. NotSpot gives you the proof.

NotSpot quietly checks whether mobile data actually works where you are, and builds a map and log you can share. It measures real data availability, response time and download speed over your mobile connection, even when you're on Wi-Fi, so results at home reflect your network, not your broadband.

WHAT IT MEASURES
• Data availability: four tiny HTTPS tests over mobile data only, each with a 5 second timeout
• Response time: connection, TLS and first-byte timings for every test
• Speed: a small download on some tests, with a hard monthly data cap
• Radio technology in use, such as 4G LTE or 5G
• The network each test used and whether a VPN was on, so results stand up
• Which SIM each test used: on a dual SIM iPhone, each SIM's results are kept apart under its own label

Every sample is graded Good, Degraded or Dead. Before recording Dead, NotSpot gives a second, independent server a last chance of up to a minute, so very slow data is told apart from no data, and an outage at our end is never counted against your network.

EVIDENCE YOU CAN SHARE
• A map of every sample, coloured by result, filterable by date and time of day
• Tap any area to see its sample count, % dead, median response and median speed
• Optional coverage shading estimated from your samples, so patterns stand out
• History charts for any period you choose
• A one-page PDF evidence report with your name, a map, headline figures and the worst places
• A plain-English summary for your email or report, written with Apple Intelligence from your statistics (never your locations)
• Raw data export as CSV and GeoJSON
• Set a Home location so results there are headlined in reports

GENTLE ON BATTERY AND DATA
NotSpot doesn't keep GPS running. iOS wakes it as you travel, and it takes at most one sample every 30 minutes on the move (every 10 minutes on longer journeys, and never while flying), with a single quick location fix each time. While you stay put, it checks in every couple of hours, and a Shortcuts automation can add samples at exact times. A few kilobytes per sample, with a monthly cap you control.

FREE TO LOG, ONE-OFF UNLOCK
Logging is free, with no limits, and every sample is kept. The free version shows your last 7 days. A one-off Evidence Unlock shows your full history and adds written summaries, the PDF report and CSV/GeoJSON exports. No subscription.

PRIVATE BY DESIGN
Everything stays on your iPhone. No accounts, no tracking, no analytics. Your location is never sent anywhere, and reports only leave your phone when you share them.

Good for anyone who needs proof: employees on a work SIM that keeps dropping out, anyone thinking of switching network or claiming a fault, and rural and remote workers who want to know which spots actually work.

Note: iPhone doesn't let apps read signal strength, so NotSpot measures whether data works rather than showing bars. Automatic background logging needs location access set to Always. Requires an iPhone with mobile data. On a dual SIM iPhone, NotSpot tests the SIM set for mobile data.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Evidence Unlock | $6.99 | one-time |


## Is NotSpot safe?

Not enough ratings yet to assess NotSpot.

## Is NotSpot legit?

NotSpot appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for NotSpot is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.3 — 2026-10-19

Dual SIM support. NotSpot now keeps each SIM's results apart, so a work line and a personal line each get their own evidence.
• Every test records which SIM your iPhone was using for mobile data
• Give each SIM its own label in Settings, shown in reports
• Filter Home, the Map and Share Evidence by SIM, so a report covers one network
• Reports, summaries and CSV/GeoJSON exports name the SIM they cover
• Tests from earlier versions are kept, and assigned to your mobile data SIM

NotSpot tests the SIM set for mobile data. To test the other, switch mobile data to it in iPhone Settings.

### 1.2 — 2026-10-17

NotSpot now speaks German, French, Spanish, Italian and Japanese, including the evidence report and Apple Intelligence summaries.
• The whole app, the PDF report and Shortcuts in your language
• Summaries written in your language, using the same words as the app
• Dates, numbers and country names shown the way you'd expect

Also new
• A redesigned Home screen with Test Now at the top
• Reports include your name, number and reference, and mark only failed tests on the map
• Each test records the network it used and the nearest server that answered
• NotSpot spots when a VPN is on, warns you, and can leave those tests out of reports
• 4G and 5G shown more clearly, plus Low Data Mode, IPv6 and dual SIM details
• The period you choose applies across Home, the Map and Share Evidence

### 1.0 — 2026-10-16

No release notes.

## More apps by Neil Johnson

- [ISSINFO](https://appshunter.io/ios/app/issinfo/id6758734277)
- [Pole Position Fantasy League](https://appshunter.io/ios/app/pole-position-fantasy-league/id6760900066)
- [ABX: Blind Listening Test](https://appshunter.io/ios/app/abx-blind-listening-test/id6786673255)
- [STOPGAP](https://appshunter.io/ios/app/stopgap/id6791653872)
- [Voidline](https://appshunter.io/ios/app/voidline/id6797029741)
- [scandango: Document Scanner](https://appshunter.io/ios/app/scandango-document-scanner/id6814420187)

All apps by Neil Johnson: https://appshunter.io/developer/1873807920

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*