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
Read full descriptionHide full description
* 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
Read full descriptionHide full description
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 rating: VestMail at 1.8 against KollusPlayer's 1.4. VestMail also leads on iOS requirement (9.0 vs 16.0). KollusPlayer's advantage is update cadence (monthly vs every 5 months) and ratings volume (82 vs 9). On price, review sentiment, 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. Neither carries in-app purchases, so what you see is what you pay.
VestMail holds the better App Store score, 1.8 against 1.4. That said, the two scores are not equally well evidenced: KollusPlayer has 82 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 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 October 24, 2026.
| Parameter | VestMail | KollusPlayer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (9 ratings) — better | 1.4 (82 ratings) |
| Positive reviews | 27.8% of reviews — better | 26.4% of reviews |
| Number of ratings | 9 | 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
