COST Events vs OnSolve
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
COST Events
This app provides attendees of state tax conferences with essential event information. Access schedules, session materials, speaker details, and networking opportunities in one place. Stay updated with breaking announcements and navigate event spaces easily.
- Conference Schedule
- Session Materials
- Attendee Roster
- Speaker Information
- Exhibitor Listing
- Meeting Space Floor Plan
- Breaking Announcements
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The Council On State Taxation (COST) is the premier state tax organization representing business taxpayers. COST is a nonprofit trade association consisting of approximately 600 multistate companies engaged in interstate and international business. COST's objective is to preserve and promote equitable and nondiscriminatory state and local taxation of multijurisdictional business entities. COST offers its members high quality education, including conferences, schools, regional meetings and special symposia, featuring the hottest topics, delivered by the nation's most recognized experts, at a price well below comparable programs. Attendees at our conferences find a relaxed atmosphere in which to network with professional peers, free from solicitation pressures by tax consultants. The majority of COST programs qualify with state boards of accountancy and state bar associations for continuing education credits. The COST Event App enables attendees to make the most of a conference while staying up-to-date with the latest information. The following features are conveniently accessible within the app: • Conference Schedule • Session Materials • Attendee Roster • Speaker Information • Exhibitor Listing • Meeting Space Floor Plan • Twitter Feed • Breaking Announcements • and MORE... Use this app for fingertip access to all the pertinent information for COST events.
OnSolve
This app delivers critical communications directly to your mobile device. It's designed for organizations to send urgent updates and routine business information to employees, partners, and customers. Stay informed about important events that could impact operations, assets, and safety.
- Critical communication delivery
- Push notifications for updates
- Supports employees, partners, customers
- Urgent and routine message delivery
- Real-time event alerts
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Experience the upgraded OnSolve Mobile App! With over two billion notifications sent annually, OnSolve helps deliver critical communications to employees, partners, customers and other stakeholders directly on their mobile device. When an event occurs, communicating immediately is critical. Whether for urgent situations that can jeopardize operations, assets and safety, or for routine business operations. Download our mobile app to connect and start receiving push notifications regarding critical updates from your organization.
Screenshots
Verdict
The clearest difference is rating: COST Events at 4.0 against OnSolve's 1.9. OnSolve's advantage is ads (none vs shown) and update cadence (monthly vs every 5 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.
COST Events holds the better App Store score, 4.0 against 1.9. That said, the two scores are not equally well evidenced: OnSolve has 32 ratings behind it against 1, so its average is the more settled of the two.
COST Events ships an update every 5 months, OnSolve monthly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.
| Parameter | COST Events | OnSolve |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 1.9 (32 ratings) |
| Positive reviews | — | 14.3% of reviews |
| Number of ratings | 1 | 32 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Council On State Taxation | OnSolve |
Customer experience
COST Events
OnSolve
In-app purchases
COST Events
No in-app purchases
OnSolve
No in-app purchases









