Comparison

Solis vs OneTap

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

Head to head
About

Solis

Track sunrise, sunset, and twilight times globally with visually appealing gradient displays. Receive notifications for key solar events and access golden and blue hour times for photography. A simple widget provides at-a-glance information.

Highlights
  • Sunrise and sunset time tracking
  • Twilight time display (golden/blue hour)
  • Global city support
  • Event notifications
  • Today widget
  • Twilight type explanations
Features
Read full description

Sunrise, sunset, and twilight time time-tracker - Solis shows you when it gets dark or light in any city around the world with its beautiful gradient. - Setup notifications for all the important sun events so you never get caught out in the dark again. - See the times of golden and blue hour for photography with the perfect light. - Simple today widget to know at a glance when the next sunrise, sunset, first light, or last light occurs. - Learn about the three different types of twilight and find out how they affect the light in the sky.

About

OneTap

This utility app provides instant flashlight and SOS functionality with multiple access points like widgets and Siri. It offers adjustable LED and screen light modes, an auto-off timer, and privacy-focused features with no ads or internet connection required.

Highlights
  • Instant LED and screen light
  • SOS and Morse code translator
  • Auto-off timer
  • Home and Lock Screen widgets
  • Control Center and Siri integration
  • Privacy-focused, no internet required
  • Adjustable brightness and color modes
Features
Read full description

OneTap Light is the flashlight that gets out of your way. One tap, instant light — under 300ms. No ads, no tracking, no internet. Ever. INSTANT ACCESS EVERYWHERE Turn on light from anywhere: the app, a Home Screen or Lock Screen widget, Control Center, the Action Button, or "Hey Siri." One tap, under 300 milliseconds. No splash screens, no loading, no sign-up. TWO LIGHT MODES • LED Torch — full-power camera flash, now with adjustable brightness on supported iPhones • Screen Light — soft white, warm, or red light, plus a full color wheel. Perfect for reading, camping, or keeping your night vision AUTO-OFF TIMER Set 2, 5, 10, or 20 minutes and your flashlight turns off by itself — no wasted battery, no torch left on overnight. EMERGENCY SUITE • SOS — international Morse code signal, one tap to start and stop • Morse translator — type any message and watch it blink in Morse • Beacon — a slow, bright pulse to mark your location • Strobe — deliberately separated and gated, adjustable frequency, never triggers by accident PRIVACY FIRST — FOR REAL • Zero internet connection — no network permission at all • Zero analytics, telemetry, or trackers • Zero ads, now and forever • Everything stays on your device WIDGETS & QUICK ACCESS Home Screen and Lock Screen widgets, Control Center control, and Siri Shortcuts put light one tap away without opening the app. Pocket protection prevents accidental activation. BUILT FOR EVERYONE VoiceOver support, high-contrast interface (WCAG AA), large one-handed touch targets, and 50 languages. Works fully offline — perfect for emergencies, power outages, camping, or everyday use. COMPLETELY FREE No ads. No in-app purchases. No subscriptions. The whole app is free and always will be. A flashlight should just work — instantly, privately, every time. That's OneTap Light.

Screenshots

Solis4 screens
OneTap4 screens

Verdict

The call

The clearest difference is rating: OneTap at 5.0 against Solis's 4.8. OneTap also leads on iOS requirement (14.0 vs 18.0). Solis's advantage is ratings volume (5 vs 1). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

OneTap holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Solis has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Solis ships an update every 2 months, OneTap every 4 months. The most recent releases landed on October 20, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Solis versus OneTap: the parameters behind the verdict, then further details
ParameterSolisOneTap
PriceFreeFree
Rating4.8 (5 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPod — better
Requires iOS18.014.0 — better
Further details — not scored
Size29 MB20 MB
Age rating4+4+
DeveloperJake Runzerlapnito.cz s.r.o.

Customer experience

Solis

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OneTap

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Solis

No in-app purchases

None

OneTap

No in-app purchases

Questions

Is Solis free?
Solis is free to download, with no in-app purchases.
Is OneTap free?
OneTap is free to download, with no in-app purchases.
Which has better reviews, Solis or OneTap?
OneTap is rated higher. Solis averages 4.8 out of 5 from 5 ratings, while OneTap averages 5.0 from 1 ratings.
Do Solis or OneTap have ads?
Neither Solis nor OneTap shows ads.
Which is updated more often, Solis or OneTap?
Solis ships an update every 2 months, and OneTap every 4 months. Most recently, Solis was updated on October 20, 2026 and OneTap on October 31, 2026.

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