Spark vs Ajar Mic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spark
This intelligent amp and app combination creates a virtual band that learns your playing style to generate accompanying bass and drums. Access millions of songs with auto-displayed chords, over 10,000 tones, and voice command functionality. It's designed to enhance your practice and performance experience.
- Auto chord display for millions of songs
- Smart Jam with AI-generated bass and drums
- Voice command control
- BIAS tone engine with 10,000+ presets
- Tempo control and looping for practice
- Realistic virtual tube amps and effects
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The smart amp and app that jam along with you using intelligent technology. Play and practice with millions of songs and access over 10,000 tones powered by our award-winning BIAS tone engine. *Auto Chords* Automatically display chords for millions of songs. Choose any song, and Spark will auto display its chords in real-time as you play. Easy controls let you slow down the song’s tempo or loop a difficult section as you master playing it. *Smart Jam* The Spark amp and app work together to learn your style and feel, and then generate authentic bass and drums to accompany you. It’s a smart virtual band that goes wherever you go! *Voice Command* The Spark app responds to your voice commands. Tell it to stream a rock song or a blues backing track, or ask for a virtual band to follow your playing. *Tone Engine* Whether you play pristine melodies, crunchy chords or soaring leads, Spark gives you a full amp modeling and multi-effects engine, powered by Positive Grid’s state-of-the-art BIAS with the most realistic virtual tube amps and effects on the planet. *Requires Spark Amp* *10,000+ Tones* The Spark app provides over 10,000 killer guitar and bass amp -and-FX presets from famous guitarists, professional session players, expert studio engineers and hit-making producers from around the world. If you have any questions or feedback, contact us via https://help.positivegrid.com/hc/en-us/requests/new
Ajar Mic
This app connects musicians with open mic nights and helps hosts manage their events. Artists can find and sign up for slots, receive notifications, and manage their public profiles. Hosts can set up events, manage signups, and communicate with performers.
- Find open mic events
- Sign up for performance slots
- Receive event notifications
- Public artist profile
- Venue display screen support
- Host event management tools
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Ajar Mic Open mics run on good vibes and bad WiFi. Ajar Mic is here to handle the logistics so you can focus on the music. Whether you're a songwriter hunting for a stage on a Tuesday night or a host keeping the local scene alive, Ajar Mic connects performers and venues in one place built for the way open mics actually work. For Artists Browse open mic nights near you and grab a slot before they fill up. You'll get a heads-up when your set time is coming, when something changes, or when the host has news for the lineup. Your profile travels with you: your name, photo, and logo can show up on the venue screen when it's your turn to step up. For Hosts Set your slots, open your signup window, and let your performers claim their spots. When something changes, blast a message to everyone on the bill in one tap. Less chasing people down, more focus on making the night a good one. What You Get Find open mic events happening near you Sign up for slots with live availability Push notifications for reminders and last-minute updates, with controls to choose exactly what you hear about A public artist profile with your photo, background, logo, and a link to your corner of the internet Venue display screen support so your name is up in lights (or at least on the TV) when you perform Premium artists can customize their display slide layout and pick what shows on screen Host tools for managing your event, your slots, and your performers Download a copy of your personal data whenever you want it Free to join. Premium Artist and Host subscription plans available for artists and venues who want more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ajarmic.com/privacy-policy
Screenshots
Verdict
The clearest difference is rating: Spark at 4.8 against Ajar Mic's 3.7. Spark also leads on ratings volume (25K vs 3). Ajar Mic's advantage is review sentiment (67% vs 55%). 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
Both are free to download. Spark sells 1 one-off in-app purchase and Ajar Mic sells 4 in-app purchases, starting at $5.00 per month. Whichever you choose, the download price is not the number that matters.
Spark holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Spark has 25K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 55% of Spark's written reviews are positive against 67% of Ajar Mic's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | Spark | Ajar Mic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (25K ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 55.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 25K — better | 3 |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 562 MB | 42 MB |
| Age rating | 17+ | 12+ |
| Developer | Positive Grid Inc | Bearded Squid LLC |
Customer experience
Spark
Ajar Mic
Bugs and requests
Spark
Reported bugs
5 issues- App frequently disconnects from amp
- Tone selection issues and inconsistencies
- Sudden loud noises or feedback from amp
- Firmware update process is cumbersome
- Spotify integration not working as advertised
Requested features
6 requests- Add looping functionality
- Improve auto-chord detection and playback
- Allow more customization of signal chain and effects
- Integrate with more music services beyond Spotify
- Add EQ controls for Bluetooth speaker mode
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- Sync saved tones across devices
Ajar Mic
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark
- Experience Jimi Hendrix™$19.99
Ajar Mic
- Premium Artist Monthly$5.001 Month
- Host Monthly$20.001 Month
- Premium Artist Yearly$50.001 Year
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- Host Yearly$200.001 Year









