Comparison

Synology Secure SignIn vs Split Flap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Synology Secure SignIn

Enhance your account security with two-factor authentication. Approve sign-in requests or use verification codes to protect your Synology NAS and account. It can even replace your password for a more streamlined yet secure login experience.

Highlights
  • Two-factor authentication
  • Approve sign-in requests
  • Verification code (OTP)
  • Password replacement
  • Enhanced account security
Features
Read full description

**Synology NAS and a Synology account are required for this Application.** **DiskStation Manager 7.0 or above version with Synology Secure SignIn service enabled is required.** Synology Secure SignIn increases account security and offers two verification methods: Approve sign-in and verification code (OTP). Approve sign-in can be used to replace DSM password. For enhanced protection, use either method as the second sign-in step of 2-factor authentication.

About

Split Flap

Transform your devices into a retro message board with authentic flip animations and sound. Display custom messages, live feeds like weather and stocks, and schedule content. Offers a premium upgrade for advanced formatting and scheduling.

Highlights
  • Authentic split-flap flip animation
  • Customizable messages with line breaks
  • Live weather and stock feeds
  • Multiple display themes
  • Message scheduling
  • Cross-platform support
Features
Read full description

Turn any screen into a beautiful signage display. Split-Flap Board recreates the mechanical charm of airport departure boards — then goes further with LED matrices, retro marquees, glowing neon, and cinematic text crawls. Write a message, pick a style, and watch it come to life. WHAT YOU CAN DO • Type any message and watch it flip, glow, scroll, or reveal itself character by character • Build playlists that rotate through your messages automatically • Schedule messages to appear at the right time of day • Add live feeds — time, weather, news, and stock prices update themselves • Use it on iPhone, iPad, Mac, and Apple TV DISPLAY STYLES • Split-Flap — the classic Solari board, in basic and sepia variants (free) • LED Dot Matrix — crisp pixel displays with animated reveals (free) • Cyberpunk Neon — glowing borders that pulse, chase, blink, and hum • Retro Marquee — warm theater bulbs in any color you like • Galaxy Crawl — cinematic perspective scrolling • Word Matrix — dramatic letter-by-letter reveals, in light or dark • Background Image — your own photos behind animated text MADE FOR REAL PLACES Shop hours and daily specials. The Wi-Fi password for guests. A welcome message by the door. A birthday surprise on the TV. A countdown to your next trip. A dashboard on a spare iPad. However you use it, it looks the part. WORKS OFFLINE, STAYS PRIVATE No account. No sign-in. No ads, no tracking, no analytics. Your messages stay on your device. Live feeds only reach the internet when you switch them on. FOR POWER USERS Turn on the built-in local REST API and drive the board from another device on your Wi-Fi — a home server, a shortcut, a script. PREMIUM — ONE PURCHASE, YOURS FOREVER The Split-Flap and LED themes — and all core editing — are free. A single one-time purchase, never a subscription, unlocks every premium theme, unlimited playlists, Fullscreen mode, and the REST API. Buy once, use it on all your devices.

Screenshots

Synology Secure SignIn3 screens
Split Flap4 screens

Verdict

The call

Synology Secure SignIn and Split Flap both sit at 4.8 stars, but that hides the real split: 100% of Split Flap's written reviews are positive against 47% of Synology Secure SignIn's. Split Flap also leads on update cadence (every 4 weeks vs every 6 months). Synology Secure SignIn's advantage is in-app purchases (none vs 2) and ratings volume (9K vs 1). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Split Flap sells 1 one-off in-app purchase. Synology Secure SignIn asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Split Flap holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Synology Secure SignIn has 9K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 47% of Synology Secure SignIn's written reviews are positive against 100% of Split Flap's.

UpkeepUpdate frequency

Synology Secure SignIn ships an update every 6 months, Split Flap every 4 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Synology Secure SignIn versus Split Flap: the parameters behind the verdict, then further details
ParameterSynology Secure SignInSplit Flap
PriceFreeFree
Rating4.8 (9K ratings)5.0 (1 ratings) — better
Positive reviews47.3% of reviews100.0% of reviews — better
Number of ratings9K — better1
Update frequencyEvery 6 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, Mac, Apple TV
Requires iOS14.0 — better17.0
Further details — not scored
Size50 MB15 MB
Age rating4+4+
DeveloperSynology Inc.Gregory Dolder

Customer experience

Synology Secure SignIn

All ratings8,888 ratings
Positive96.2%
Neutral1.4%
Negative2.4%
Written reviews239 reviews
Positive47.3%
Neutral10.9%
Negative41.8%

Split Flap

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Synology Secure SignIn

Reported bugs

4 issues
  • Approval requests not showing up
  • OTP codes not working as expected
  • Incompatibility with some DSM versions
  • Unreliable login process

Requested features

4 requests
  • Add Face/Touch ID validation
  • Improve Apple Watch integration
  • Implement search/grouping for OTP codes
  • Enhance multi-device synchronization

Split Flap

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Synology Secure SignIn

No in-app purchases

1 purchases

Split Flap

One-time1
  • Premium Features2 variants$0.99

Questions

Is Synology Secure SignIn free?
Synology Secure SignIn is free to download, with no in-app purchases.
Is Split Flap free?
Split Flap is free to download, with in-app purchases available.
Which has better reviews, Synology Secure SignIn or Split Flap?
Split Flap is rated higher. Synology Secure SignIn averages 4.8 out of 5 from 9K ratings, while Split Flap averages 5.0 from 1 ratings.
Do Synology Secure SignIn or Split Flap have ads?
Neither Synology Secure SignIn nor Split Flap shows ads.
Which is updated more often, Synology Secure SignIn or Split Flap?
Synology Secure SignIn ships an update every 6 months, and Split Flap every 4 weeks. Most recently, Synology Secure SignIn was updated on November 8, 2026 and Split Flap on October 30, 2026.

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