London-based Solo60 has raised £2.5 million ($3.3 million) to accelerate expansion across the UK and support longer-term international growth. The company lets consumers, personal trainers and influencers book private training spaces by the hour through a mobile app, rather than joining a conventional shared gym.

That matters because Solo60 is not simply opening smaller gyms. It is building a software-enabled operating model around private, modular fitness space: short-duration bookings, distributed locations, app access and a real-estate footprint based on smaller-format sites. Its own site describes the business as a network of private gyms and treatment rooms bookable on demand, while background material describes the company as transforming unused office and retail units into high-end, app-enabled training environments. 

The strategic signal is clear: parts of the fitness market are moving away from the idea that value comes from a big shared floor and toward the idea that value comes from access, privacy, flexibility and software coordination.

App-bookable micro-gyms as fitness infrastructure

App-bookable micro-gyms are small private fitness spaces that users reserve through software for solo training, PT sessions or small-group use. Instead of selling access to a crowded facility, the model sells time-bound access to a controlled environment.

That changes the economics and the user experience.

For consumers, the product is privacy and convenience. For personal trainers, it is flexible access to training space without being locked into a single facility. For operators, it is a more modular real-estate model that can fit into smaller urban units. Solo60 says its spaces serve trainers, therapists and individuals across London, and its pricing model is built around credits and subscriptions that unlock bookable spaces on demand.

In technology terms, the key layer is not advanced hardware. It is software orchestration: discovery, booking, access control, payments and location management.

What are app-bookable micro-gyms?

App-bookable micro-gyms are small private training spaces that users reserve through a mobile app for exclusive use over a set period. They combine fitness real estate with software for scheduling, access and payments, creating an on-demand alternative to conventional gym memberships.

Why private gym space is becoming more commercially relevant

The model speaks to several market pressures at once.

First, traditional gyms are optimised for shared access and membership volume. That works well at scale, but it can be a poor fit for people who want privacy, creators who need controllable space, or trainers who want flexibility across locations.

Second, post-pandemic fitness behaviour has made consumers more comfortable with fragmented, on-demand access models. They are already used to booking classes, training sessions and wellness services through apps.

Third, commercial real estate has created an opportunity. Smaller or underused urban units can be repurposed into bookable fitness environments more easily than large full-service gyms. Solo60’s own brand materials explicitly frame the business around repurposing unloved space into app-enabled private gyms.

The result is a model that sits somewhere between a gym, a workplace booking platform and a fitness marketplace.

Micro-gym platforms and the future of fitness distribution

The deeper significance of Solo60’s raise is that it points to a shift in how fitness is distributed.

Historically, fitness brands scaled through large clubs, franchise studios or consumer hardware in the home. Micro-gym platforms suggest a fourth route: dense networks of small, software-managed spaces.

That matters because it creates a different competitive logic:

• smaller sites instead of flagship footprints
• booking software instead of long contracts
• distributed access instead of one home club
• mixed user types instead of a single membership audience

In practice, that makes the gym behave more like a platform network than a standalone venue.

Future implications for fitness real estate and on-demand training

Over the next five to ten years, models like Solo60 could help reshape urban fitness in three ways.

First, gym infrastructure may become more modular. Operators will look for smaller-format sites that can be opened faster and placed closer to demand clusters.

Second, software will matter more than square footage. Booking systems, access control and utilisation management will become central assets.

Third, the line between fitness, wellness and creator infrastructure may keep blurring. Spaces designed for training can also support therapy, coaching and content creation, broadening revenue beyond ordinary memberships. Solo60 already positions its network around private gyms and treatment rooms, not just training floors.