VestMail vs KollusPlayer
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).
KollusPlayer
This is a dedicated video player for encrypted content from the Kollus service. It offers playback speed control and resume playback functionality. Compatible with a wide range of iPhone and iPad models.
- Plays Kollus encrypted content
- Adjustable playback speed (0.5x-2.0x)
- Resume playback
- Wide device compatibility
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KollusPlayer는 Kollus 서비스의 암호화된 컨텐츠를 재생하기 위한 전용 동영상 플레이어입니다. [부가기능] 배속조절: x0.5~x2.0 (iPhone4 x1.2배속) 이어보기 [지원단말] iPhone4s, iPhone5, iPhone5c, iPhone5s, iPhone6, iPhone6 Plus, iPhone6s, iPhone6s Plus, iPhoneSE, iPhone7, iPhone7 Plus, iPhone 8, iPhone 8 Plus, iPhone X iPad2, iPad3, iPad Retina, iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPad Pro
Screenshots
Verdict
The clearest difference is update cadence: KollusPlayer at monthly against VestMail's every 5 months. KollusPlayer also leads on ratings volume (82 vs 7). VestMail's advantage is iOS requirement (9.0 vs 16.0). On price, rating, review sentiment and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 1.4 for VestMail against 1.4 for KollusPlayer. That said, the two scores are not equally well evidenced: KollusPlayer has 82 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 28% of VestMail's written reviews are positive against 26% of KollusPlayer's.
VestMail ships an update every 5 months, KollusPlayer monthly. Both last shipped on September 22, 2026.
| Parameter | VestMail | KollusPlayer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.4 (7 ratings) | 1.4 (82 ratings) |
| Positive reviews | 27.8% of reviews — better | 26.4% of reviews |
| Number of ratings | 7 | 82 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | yettiesoft | Catenoid, Inc. |
Customer experience
VestMail
KollusPlayer
In-app purchases
VestMail
No in-app purchases
KollusPlayer
No in-app purchases
