Temp Mail vs GCM Survey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Temp Mail
Instantly create disposable temporary email addresses to receive emails and attachments without revealing your real inbox. Keep your primary email clean from spam, advertising, and phishing attempts with this anonymous, free service.
- Generate disposable email addresses instantly
- Receive emails and attachments
- Read incoming emails
- Delete and generate new addresses quickly
- Custom email names
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Temp Mail - Temporary Email Pro By using Temp Mail app, you'll be able to instantly create disposable temporary email address and forthwith receive emails, together with attachments. Forget about revealing your real email to everybody. It causes endless spam, advertising mailings, email hacking, and phishing tries. Keep your real inbox clean and secure. temporary Mail provides a short lived, anonymous, free, disposable, fake email address in 10minute mail vogue. This disposable mailbox helps your primary mailbox clean from spam and phishing. With Temp Mail app, what you can : - Generate a replacement email address instantly - Receive emails and attachments mechanically - Read incoming emails, together with attachments - Quickly delete and/or generate new email addresses - Custom email name Note: This app doesn't provide send email feature. we only receive e-mail. Subscription details In order to use the app, you need to purchase an auto-renewable subscription. 7-day free trial period is provided for weekly subscription. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. The cost depends on the selected plan. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms Of Use: https://dreamteam-apps.pl/term_of_use.txt Privacy Policy: https://dreamteam-apps.pl/privacy_policy.txt
GCM Survey
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GCM Survey turns your iPhone or iPad into the screen, the control panel and the safety net for your Geosensors data logger. Join the logger's own Wi-Fi network and you have the whole survey in your hands — no internet, no cables, no laptop in the field. LIVE SURVEY MONITORING See the survey as it happens. Your track draws itself on the map in real time, rotating course-up as you walk the line so the display always matches the direction you're facing. Live EM traces, GPS quality, satellite count, battery voltage, temperature, pitch and roll are all a tap away while you record. PRE-FLIGHT CHECK BEFORE YOU START Data is flowing before you press Start, so the readiness panel tells you what the logger can actually see: EM sensor live and how many separations, GPS fix quality, free storage. Catch a dead sensor or a bad fix at the truck instead of at the end of the line. FULL CONTROL OF THE LOGGER Start, pause, resume and stop surveys from your phone. Pauses are recorded properly — the track breaks where you stopped and picks up where you resumed, so distance and duration never count the walk back to the truck. SPOKEN ALERTS Eyes on the ground, not on the screen. The app speaks up when something needs you: a card error, a receiver overflow, storage running low, or a data source that has gone quiet. Mute it any time. IT SURVIVES INTERRUPTIONS The logger is the source of truth and it keeps recording no matter what your phone does. Walk out of range, get a call, relaunch the app — reconnect and the app rejoins the survey in progress, refetches only the bytes it missed and redraws the full track. A dropped packet or a missed poll is never treated as a lost survey. Phone battery dies mid survey? Simply connect a different phone or iPad to the same logger and continue as you were. FINISH AND REVIEW IN SECONDS Because the app captures data live as you record, there's no long download at the end. Stop the survey and the summary is already there: sample count, distance, duration, average speet, GPS quality and EM channel coverage. Every finishedsurvey is verified byte-for-byte against the logger's own checksum before you keep it, then saved or discarded with one tap. CHARTS AND EXPORT Plot EM waveform channels for any survey on the devicrt and share in the format your processing softwarewants: • NMEA — the raw sentence stream • XYZ — tab-separated, with UTM easting and northing • LOG — legacy tab-separated columns • CSV — dated, full-channel CSV Share straight to Files, Mail, AirDrop etc. MANAGE THE LOGGER Browse, import, rename and delete files on the logger's SD card, check free space, set the device clock, configure serial port baud rates, and change the logger's name, Wi-Fi network anSettings screen. Firmware updates are guided step bystep, with the app reconnecting and confirming the new version for you when the logger comes back up. BUILT FOR THE FIELD Designed for iPhone and iPad. Everything works entirely offline over the logger's own Wi-Fi. Requires a Geosensors GCM Logger. Contact support@geosensors.com with any questions.
Screenshots
Verdict
The clearest difference is in-app purchases: GCM Survey at none against Temp Mail's 7. GCM Survey also leads on update cadence (every 4 days vs every 17 months). Temp Mail's advantage is iOS requirement (18.0 vs 26.0). On price, ads and device support 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. Temp Mail sells 7 in-app purchases, starting at $1.99 per 7 days. GCM Survey asks for nothing beyond the download.
Temp Mail ships an update every 17 months, GCM Survey every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Temp Mail | GCM Survey |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2K ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 2K — better | — |
| Update frequency | Every 17 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 40 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | DREAMTEAM APPS sp. z o.o. | Geosensors |
Bugs and requests
Temp Mail
Reported bugs
1 issue- Inability to find or access generated emails
Requested features
2 requests- Extend email lifetime beyond 10 minutes
- Unlimited email generation
GCM Survey
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Temp Mail
- Weekly Premium with Trial3 Days trial$1.997 Days
- Weekly Premium$1.997 Days
- Monthly Premium$3.991 Month
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- Monthly Premium with Trial3 Days trial$3.991 Month
- Temporary Email Address Pro3 Days trial$3.991 Month
- Yearly Premium$12.991 Year
- Yearly Premium with Trial3 Days trial$12.991 Year
GCM Survey
No in-app purchases









