VestMail vs Second
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VestMail
This application allows users to read secure emails from a specific provider on their smartphone. It may not support secure emails requiring external plugin installations. For usability issues, users can request support via email.
- Read secure emails
- Smartphone compatibility
- Support for yettiesoft emails
- User support via email
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* VestMail은 예티소프트(www.yettiesoft.com)에서 제공하는 보안메일을 읽을 수 있는 스마트폰 프로그램입니다. * 외부 보안 플러그인 설치가 필요한 보안메일의 경우 모바일에서 열람이 불가합니다. * 확대, 축소 등 사용에 불편이 있으신 경우 메일의 정보("**카드 요금 고지서"와 같은 메일 받으신 서비스명)를 포함하여 다음 메일로 지원 요청해주세요. (support@yettiesoft.com) * VestMail is a smartphone program that allows you to read secure e-mails provided by yettiesoft (www.yettiesoft.com).
Second
This utility app provides precise server time synchronization down to milliseconds, crucial for time-sensitive events like registrations and ticketing. It features drift tracking for sustained accuracy and a Picture-in-Picture timer for live monitoring while using other applications.
- Precise server time synchronization
- Drift tracking for sustained accuracy
- Picture-in-Picture (PiP) timer
- Example site shortcuts
- Multilingual support
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Precise server time, at a glance. Second-Sync is a time synchronization tool for moments where one second matters, such as course registration and ticketing. It multi-samples the HTTP Date of your chosen site and aligns the difference from the server clock down to milliseconds. Drift tracking maintains accuracy over time, while the PiP timer lets you watch live server time even when using other apps. Key features - Precise synchronization: collects HTTP Date in parallel at least 30 times, then calculates the offset after RTT compensation, outlier removal, and EMA smoothing. - Drift estimation: runs linear regression on measured samples to track the slope of the device clock and maintain accuracy as time passes. - PiP timer: opens a Picture in Picture timer as a companion app, so you can monitor the server clock live while using a browser or other apps. - Example site shortcuts: quick buttons to load course registration pages for major Korean universities and ticket booking sites. - Multilingual support: supports Korean, English, Japanese, and Simplified Chinese, with a separate in-app language setting. Recommended for - Anyone who wants exact server time in situations where it is critical, such as registration, ticketing, or reservations. - Anyone who wants to keep accurate server time visible on iPhone or iPad while booking on the go. Notes - Synchronization may fail on sites that do not support the HTTP Date header. If so, enter another target server or use the example sites in the app. - Picture in Picture works only on supported devices running iOS 15 or later, including iPadOS. - Sync your server time with Second-Sync now. One button gives you stable synchronization and a PiP timer, so you do not miss the important moment!
Screenshots
Verdict
The clearest difference is review sentiment: Second at 89% against VestMail's 28%. Second also leads on rating (5.0 vs 1.4) and update cadence (every 4 days vs every 5 months). VestMail's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, monetization model 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. Second sells 1 one-off in-app purchase. VestMail asks for nothing beyond the download.
Second holds the better App Store score, 5.0 against 1.4. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 28% of VestMail's written reviews are positive against 89% of Second's.
VestMail ships an update every 5 months, Second every 4 days. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.
| Parameter | VestMail | Second |
|---|---|---|
| Price | Free | Free |
| Rating | 1.4 (7 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 27.8% of reviews | 88.9% of reviews — better |
| Number of ratings | 7 — better | 4 |
| Update frequency | Every 5 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 18 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | yettiesoft | Minjun Kim |
Customer experience
VestMail
Second
In-app purchases
VestMail
No in-app purchases
Second
- 초정확 Pro 업그레이드$1.99








