ZapAtlas ™ vs CellMapper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZapAtlas ™
Explore power-line maps and estimate potential electromagnetic field (EMF) exposure from your home. Measure EMF radiation directly on the map without needing a physical device. Share detailed reports and receive alerts for high EMF readings.
- Explore power-line maps
- Estimate EMF exposure
- Measure EMF directly on map
- Search global addresses
- Save favorite locations
- Share EMF reports
- Receive GPS-based alerts
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ZapAtlas™ - EMF Map allows the user to explore power-line maps & estimate potential exposure to Electromagnetic Fields (EMF). Stay home and measure EMF radiation in “milligauss” units directly on the map, without having to go there with a physical EMF meter or EMF detector yourself. Search for addresses anywhere in the world, and pull from our live database of over 20 million power-line objects. Create pins to save favorite searches and easily return back to them on the map. An EMF reader in your messages! Easily share maps and EMF measurements in a “Zap Report” with friends and family via email, text message, AirDrop, etc. Premium Features: Unlimited scrolling. Explore your EMF map anywhere without boundaries. Unlock premium address searches with pro geocoding. Extended zoom out. Enlarge 2x wider map view. In GPS mode, ZapAtlas™ - EMF Map can follow the user’s location and generate a vibrating “Zap Alert” when a high EMF reading is detected. Share detailed Zap Reports including power-line distance & voltage. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
CellMapper
Locate nearby cellular towers on an interactive map, providing details on 5G, 4G, 3G, and 2G networks. Enhance your mobile signal or explore network coverage in your area with real-time data and tower information.
- Real-time tower locations
- 5G, 4G, 3G, 2G tower details
- Interactive map integration
- Detailed tower information
- Network coverage exploration
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Cellular Tower & Signal Finder is the ultimate solution to track and locate nearby cell towers on an interactive map. Whether you're looking to boost your mobile signal or simply curious about network coverage in your area, this app provides accurate details of 5G, 4G, 3G, and 2G towers. Key Features: Real-Time Tower Locations: View nearby cell towers for all major network types, including 5G, 4G, 3G, and 2G. Detailed Tower Information: Access detailed information like tower ID, signal strength, area, and network provider. Map Integration: Seamlessly locate towers on a live map with an intuitive interface. Explore network coverage on map with Cellular Tower & Signal Finder today! Note- Premium Subscription is required to use advanced features such as tower details and filter. Privacy: https://celltower.bravycode.com/privacy.html Terms: https://celltower.bravycode.com/terms.html
Screenshots
Verdict
The clearest difference is review sentiment: ZapAtlas ™ at 50% against CellMapper's 6%. ZapAtlas ™ also leads on rating (4.9 vs 4.0). CellMapper's advantage is ratings volume (682 vs 12) and iOS requirement (14.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ZapAtlas ™ sells 2 in-app purchases, starting at $1.99 per 7 days and CellMapper sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
ZapAtlas ™ holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: CellMapper has 682 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 50% of ZapAtlas ™'s written reviews are positive against 6% of CellMapper's.
ZapAtlas ™ ships an update every 5 weeks, CellMapper every 3 weeks. The most recent releases landed on June 1, 2026 and September 25, 2026 respectively.
| Parameter | ZapAtlas ™ | CellMapper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (12 ratings) — better | 4.0 (682 ratings) |
| Positive reviews | 50.0% of reviews — better | 6.3% of reviews |
| Number of ratings | 12 | 682 — better |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Warner | Harshit Tyagi |
Customer experience
ZapAtlas ™
CellMapper
Bugs and requests
ZapAtlas ™
Not enough reviews yet to summarise bugs or requests.
CellMapper
Reported bugs
10 issues- Cell towers not loading or displaying
- App crashes and freezing
- Map zoom functionality not working
- Location detection failing
- Inconsistent tower data between free and paid versions
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- Lock icons appearing on all towers without explanation
- Towers appearing in impossible locations
- Slow map performance and lag
- App asking for rating before any usage
- Subscription not syncing across devices
Requested features
12 requests- Free trial period before requiring payment
- Carrier identification for each tower
- Network type filtering (4G, 5G, LTE, 3G)
- Signal strength visualization
- Ability to manually select preferred towers
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- Location search functionality
- Feature parity with Android version
- Monthly subscription option instead of one-time payment
- Login system for cross-device access
- Data export/download capability
- Integration with actual carrier coverage maps
- Verification of tower accuracy
In-app purchases
ZapAtlas ™
- ZapAtlas Premium Weekly$1.997 Days
- ZapAtlas Premium Monthly$4.991 Month
CellMapper
- Weekly3 Days trial$7.997 Days
- Yearly3 Days trial$24.991 Year
- Lifetime Plan$29.99
Questions
Is ZapAtlas ™ free?
Is CellMapper free?
Which has better reviews, ZapAtlas ™ or CellMapper?
Do ZapAtlas ™ or CellMapper have ads?
Which is updated more often, ZapAtlas ™ or CellMapper?
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