KeyStart vs TempMail
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyStart
This utility app provides a reliable pitch tool for choirs, a cappella groups, and vocalists. Select your desired key, play the correct chord or note, and ensure your group starts singing in tune.
- Choir pitch tool
- A cappella group support
- Vocalist tuning
- Key selection
- Chord and note playback
- Singing in tune
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Give your choir the perfect starting note every time. KeyStart is a simple, reliable pitch tool for choirs, a cappella groups, and vocalists — choose your key, play the chord or note, and start singing in tune.
TempMail
Instantly generate a temporary, disposable email address without any signup. Protect your real inbox from spam and phishing by using a throwaway address for signups, OTP codes, and free trials. Emails are automatically deleted after a set period.
- Instant temporary email address
- Disposable email for signups
- Real-time inbox with push alerts
- Copy address in one tap
- Emails auto-delete after 7 days
- Choose domain from available list
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Temp mail in one tap. TempMail gives you a temporary email address the second you open it: no signup, no password, no phone number. Use a disposable email for OTP codes, website signups, free trials, downloads, coupons and newsletters, and keep your real inbox private. Spam, phishing and data leaks land in a throwaway address you can reset in seconds. WHY TEMPMAIL • Instant temp mail: a working temporary email address in seconds • Fake email for signups: never hand out your real personal or work address • Temp email generator: regenerate a new random address until you like it • Pick your domain from the available list when you claim an address • Real-time inbox: mail appears the moment it lands, with push alerts for OTP and verification codes • Copy your address in one tap, then paste it anywhere • Unread filter and unread badges so nothing slips past you • Sent folder: every message you send from your temp address stays with the mailbox • Reset your address, delete a message or wipe everything, anytime WHAT TO USE A DISPOSABLE EMAIL FOR • One-time verification codes and OTP emails • Free trials, demos and app downloads • Online shopping, coupons and delivery updates • Forums, comments, gaming and community accounts • Newsletters you may want to drop later • Testing and QA without polluting a real mailbox • Anywhere you want a second email address, an anonymous email or a 10 minute mail style burner PRIVATE BY DESIGN • No account, no password, no phone number: nothing links the address to you • Emails auto-delete after 7 days • Unused mailboxes are removed after 14 days • Notifications never show message content on your lock screen FREE • One temporary mailbox with a random disposable address • Unlimited incoming mail, real-time inbox, push alerts • Where rewarded videos are available, watch a short video to open a message or to unlock send, reply and forward PREMIUM (weekly or monthly) • Ad-free: open every message instantly • Custom address: choose your own prefix • Up to 5 mailboxes with one-tap switching • Send, reply and forward instantly from your temp mail address Premium is an auto-renewing subscription billed to your App Store account. It renews unless cancelled at least 24 hours before the end of the current period; manage or cancel it in your device's subscription settings. Available in 43 languages. Download TempMail, the fastest temp mail and disposable email generator for a private, throwaway inbox that never exposes your real email. Privacy Policy: https://sites.google.com/view/cc-all-privacy-policy/home Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: TempMail at 4.2 against KeyStart's 1.0. TempMail also leads on update cadence (monthly vs every 13 months) and ratings volume (5 vs 1). KeyStart's advantage is in-app purchases (none vs 4). On price, ads, device support and iOS requirement 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. TempMail sells 4 in-app purchases, starting at $1.99 per 7 days. KeyStart asks for nothing beyond the download.
TempMail holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: TempMail has 5 ratings behind it against 1, so its average is the more settled of the two.
KeyStart ships an update every 13 months, TempMail monthly. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | KeyStart | TempMail |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.2 (5 ratings) — better |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 13 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Bernhard Mitas | CodeCross |
Customer experience
KeyStart
TempMail
In-app purchases
KeyStart
No in-app purchases
TempMail
- Weekly Unlmiited$1.997 Days
- Premium Monthly$3.991 Month
- Temp Email Yearly3 Days trial$24.991 Year
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- Temp Email - Disposable Inbox$24.991 Year









