Solbox vs Firefly Glow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solbox
This app provides a variety of soundscapes and audio tools designed to enhance focus, promote calm, and aid sleep. It offers features like body doubling, audio motion, and AI-generated sound effects, with a particular focus on supporting individuals with ADHD.
- Focus soundscapes
- Body doubling ambient recordings
- Audio motion with left/right panning
- AI-generated sound effects
- Pomodoro timer for focus
- Smart fade-out sleep timer
- Haptic sync for vibrations
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Sounds that work with your brain, not against it. SolBox is focus sounds, body doubling, audio motion, and soothing soundscapes for deep work, calm, and sleep. Designed first for ADHD brains — and built for anyone whose attention gets louder in silence: students, knowledge workers, light sleepers, anxious minds, and the chronically overstimulated. If you've ever tried to start a task in a quiet room and watched 40 minutes vanish, or lay awake at 2 a.m. with your brain looping — this app is for you. ONE TAP TO FOCUS • "Focus" — your default sound, your default volume, your default timer. One tap. No decisions. • Pomodoro built for focus (25/5, 50/10, 90/20, custom). Audio keeps playing through work blocks. Gentle chime on the breaks. BODY DOUBLING — WORK WITH ME • Coffee shop, library, coworking space, study room — long-form ambient recordings (45–60 min) with no obvious loops • The feeling of working alongside someone, when you're working alone • Body doubling is one of the most-studied ADHD focus strategies. Now in your pocket. AUDIO MOTION • Subtle left↔right motion that gives the stimulation-seeking ADHD brain something to track — so the rest of your focus is free for the actual task • Works with ambient soundscapes, layered focus mixes, and body doubling • Three presets: Subtle, Medium, Strong • Headphones recommended for the full effect FOCUS SOUNDS THAT ACTUALLY WORK • Brown, white, pink, and green noise • Layer multiple sounds to build your perfect focus mix • Plays alongside Spotify, YouTube, and podcasts DRIFT OFF TO SLEEP • Layered soundscapes that quiet a busy mind • Smart fade-out timer — audio gently lowers to silence so you wake to quiet, not a sudden cutoff CALM A LOUD MIND • Sounds for wind-down, anxiety relief, and meditation • Slow, low-frequency beds for evening decompression and breathing practice A FIDGET FOR YOUR EARS — AND YOUR HANDS • Optional haptic sync — subtle vibrations in time with your audio • For hands that need to move while your focus stays put DESCRIBE A SOUND, HEAR IT INSTANTLY • AI-generated SFX — type "crickets under a summer sky" or "rain on a wooden cabin" and hear it in seconds • When the default sounds get boring (and they will), make new ones in a sentence TONE-BASED FREQUENCIES • A library of pure-tone solfeggio frequencies for users who prefer them. 22 LANGUAGES SUPPORTED WHY WE BUILT THIS SolBox started as one person's app for their own ADHD. We strip out the things that get in the way of focus — loud onboarding, ten-tap menus, pseudoscientific claims. If you've ever opened a sounds app and immediately closed it because there were 50 options, you'll get this one. SUBSCRIPTIONS and IN-APP PURCHASES • 1 Week – Focus Noise & Frequency (Weekly) – $2.99 • 1 Year – Focus Noise & Frequency (Yearly) – $22.99 • Lifetime – Focus Frequency & Sleep Sounds – $29.99 (one-time purchase) Most people pick lifetime. We get it. — Payment is charged to your Apple ID at confirmation of purchase. — Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. — Manage or cancel anytime in Apple ID Account Settings. PRIVACY & TERMS Terms of Use (Apple's standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chernyshtaras94.wixsite.com/solbox-pp QUESTIONS? IDEAS? Email: chernyshtar@gmail.com Or send feedback inside the app — other users can vote on your ideas. If SolBox helps you focus or finally drift off, a quick review helps other brains find it. Thanks for being here.
Firefly Glow
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In the darkness, a gentle glow waits for you. Firefly is not another productivity timer. It's a quiet companion for your focused hours. Tap the screen, and fireflies drift into your night — soft, warm, alive. They stay as long as you do. THE FIREFLIES REMEMBER Start a session with a single tap. Fireflies appear and slowly multiply, drawn to your calm focus. No countdowns staring you down. No streaks punishing you for stopping. Just light, floating in the dark. If you need to step away, that's okay. They'll probably still be here when you come back. CONSTELLATIONS IN THE NIGHT Focus long enough and something quiet happens — your fireflies spontaneously gather into real constellation formations. You don't summon them. You don't choose them. You just look up, and they're there. Every constellation in the night sky is here, each with a hand-drawn illustration. Some appear often. Some are rare. Some you may never see. That's part of the beauty. A JOURNAL OF ENCOUNTERS Every session is an encounter, not an achievement. Your Firefly Journal records each quiet moment — not as trophies, but as memories of time spent together. Seasons change. The fireflies change with them — their color shifts slowly, spring to summer, autumn to winter, without you even noticing. DESIGNED FOR THE NIGHT • Dark-only interface — a darkness that feels alive • Firefly colors that follow the seasons • Ambient soundscapes: crickets, rain, waves, streams • A gentle haptic farewell when each session ends • Home Screen, Lock Screen, and Dynamic Island widgets • One-tap focus, from a brief moment to a whole night • Leave briefly and come back — they'll still be here • iCloud sync across your devices • No account. No ads. No tracking. Your data stays on your device. Firefly works fully for free. Upgrade to Firefly Light for more fireflies, the full journal, all color modes, ambient sounds, and iCloud sync. Monthly · Annual · Lifetime Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Solbox and Firefly Glow are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Solbox sells 4 in-app purchases, starting at $4.99 per 7 days and Firefly Glow sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Solbox ships an update every 3 weeks, Firefly Glow fortnightly. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.
| Parameter | Solbox | Firefly Glow |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 333 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Taras Chernysh | 南 张 |
In-app purchases
Solbox
- Focus noise & frequency (week)3 Days trial$4.997 Days
- Focus noise & frequency (year)$39.991 Year
- 9 Sound Coins$0.99
- Focus Frequency & Sleep Sounds$29.99
Firefly Glow
- Firefly Glow$0.991 Month
- Firefly Glow$4.991 Year
- Firefly Glow (Lifetime)$9.99








