MultiTracks.com ChartBuilder vs Thunderbolt Radio App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MultiTracks.com ChartBuilder
Customize song charts with adjustable keys, capo settings, and chord displays. Add annotations, create setlists, and sync with audio playback for seamless practice and performance. Access a vast library of charts with a subscription.
- Endless chart customization
- Adjustable key, capo, and chord display
- In-app annotations and highlighting
- Setlist creation and collaboration
- Sync with audio playback
- Multiple chart type options
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ChartBuilder® allows you to endlessly customize each chart to meet your needs. Change the Key, Capo, Chord Display, & Layout with filters. Write, type, & highlight in any song section on your charts with Annotations. Easily save & recall them at any time. Lead with confidence. ChartBuilder® Features: • Access to every chart in our catalog with an active ChartBuilder Content Subscription • Teams with RehearsalMix can listen to the original song with a specific instrument turned up or down! • Create & Collaborate on setlists with your team in Playback, ChartBuilder and on our Website. • Charts available in all 12 keys • ChartBuilder and RehearsalMix Sync: Your chart auto-scrolls as RehearsalMix audio plays • Loop individual song sections in the RehearsalMix • Chart Type options (Chords & Lyrics, Lyrics, or Song Map) • Chord Display options (Chords, Numbers, Numerals, or Do-Re-Mi) • Change song section style (Condensed or Full) • Annotations • Optional Song Map that matches the original recording and MultiTrack • Optional MD Notes • Browse songs by Title, Album, Genre, Theme, or Top Songs • Bluetooth Control (Compatible with AirTurn, Coda Music, Donner, and other external keyboard devices) • View user-generated Cloud Charts Solo Practice Bundle (5.99 per Month): • Free 30-day trial (Subscription renews at end of 30-day trial) • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • The account will be charged for renewal within 24-hours prior to the end of the current period for $5.99 • Subscriptions may be managed by the user and auto-renewal maybe be turned off by going to the users' Account Settings after purchased • Any unused portion of a free trial period will be forfeited when the user purchases a subscription where applicable Terms of Use (https://www.multitracks.com/terms/) ChartBuilder Team Content (12.99 per Month): • Free 30-day trial (Subscription renews at end of 30-day trial) • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • The account will be charged for renewal within 24-hours prior to the end of the current period for $12.99 • Subscriptions may be managed by the user and auto-renewal maybe be turned off by going to the users' Account Settings after purchased • Any unused portion of a free trial period will be forfeited when the user purchases a subscription where applicable • Terms of Use (https://www.multitracks.com/terms/) ChartBuilder App (1.99 per Month) • Free 30-day trial (Subscription renews at end of 30-day trial) • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • The account will be charged for renewal within 24-hours prior to the end of the current period for $1.99 • Subscriptions may be managed by the user and auto-renewal maybe be turned off by going to the users' Account Settings after purchased • Any unused portion of a free trial period will be forfeited when the user purchases a subscription where applicable • Terms of Use (https://www.multitracks.com/terms/) Price may vary by location. Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Any unused portion of a free trial will be forfeited if you upgrade from a free subscription to a paid version. Manage your subscriptions in Account Settings after purchase. For more details on our Privacy Policy and Terms of Use please visit: http://www.multitracks.com/privacy/ and http://www.multitracks.com/terms/
Thunderbolt Radio App
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Listen to Thunderbolt Radio App worldwide on your iPhone and iPad. Listen to music, sports, news, and talk shows from Thunderbolt Radio App while being immersed in conversations with our DJs, friends, and fellow listeners. With the app you get: - Instant play of the radio station with song information - Real-time messaging with friends, listeners, and DJs - Quick access our station's social media feeds - Interactive schedule of radio events and programming - you can set alerts and be notified when your favorite shows are about to come on air For technical support for the app please contact RadioFX at contact@radiofxinc.com. For questions about content of the station, please use the contact information in the "i" icon in the app.
Screenshots
Verdict
The clearest difference is in-app purchases: Thunderbolt Radio App at none against MultiTracks.com ChartBuilder's 4. MultiTracks.com ChartBuilder's advantage is chart position (#107 vs unranked) and update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement 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. MultiTracks.com ChartBuilder sells 4 in-app purchases, starting at $2.99 per month. Thunderbolt Radio App asks for nothing beyond the download.
MultiTracks.com ChartBuilder ships an update monthly, Thunderbolt Radio App every 2 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.
| Parameter | MultiTracks.com ChartBuilder | Thunderbolt Radio App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6K ratings) — better | — |
| Positive reviews | 63.1% of reviews | — |
| Number of ratings | 6K — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Best chart rank | #107 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.4 | 14.0 — better |
| Further details — not scored | ||
| Size | 283 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | MultiTracks.com | RadioFX |
Bugs and requests
MultiTracks.com ChartBuilder
Reported bugs
5 issues- Crashes and freezes on launch
- Inconsistent key changes and song resets
- Sync issues between devices and the web portal
- Screenshots triggering account disabling warnings
- Inability to use app while locked or in background
Requested features
5 requests- Ability to customize arrangements and parts
- Improved offline functionality
- More control over click track and vocal cues
- Better integration with other apps and devices
- Increased font size and accessibility options
Thunderbolt Radio App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
MultiTracks.com ChartBuilder
- ChartBuilder App$2.991 Month
- Solo Practice Bundle$6.991 Month
- Content Subscription$14.991 Month
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- Chart Pro$21.491 Month
Thunderbolt Radio App
No in-app purchases
Questions
Is MultiTracks.com ChartBuilder free?
Is Thunderbolt Radio App free?
Do MultiTracks.com ChartBuilder or Thunderbolt Radio App have ads?
Which is updated more often, MultiTracks.com ChartBuilder or Thunderbolt Radio App?
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